I recently found out that our Senior Lead is leaving in the next week or so and our manager has said in Teams chats that she is expecting the rest of the team to help fill the gaps of the Senior workload. Now I have confirmed with our manager that they do expect to make the Senior role open for employment and I do understand that while the hiring process is happening, it's natural to take on the missing roles to ensure things keep running. My question though is how long would you continue doing this extra work until you say you should be getting paid more since you're doing additional duties outside your original job description? My biggest concern is that everyone picks up the additional workload spread out amongst the team, things are able to keep running smoothly, and eventually the senior role doesn't get filled and you have the whole team performing additional tasks outside what they normally do.